Despite this being a desktop or HTPC case, the PC-C32 is quite large. This is because it supports a full-size ATX motherboard and standard ATX PSU - no being stuck with a microATX motherboard or weird PSU form factor. The downside to this, is of course that the case isn't as slim as some others out there, and may not blend in with your HT setup. The dimensions of the case are 426 x 167 x 530mm or about 17" x 6.5" x 21" (WxHxD); for rackmount purposes this corresponds to a 4U size. (1U is about 1.75" thick) The depth in particular isn't well-shown on Lian-Li's site; with a depth of 21", you'll want to make sure that this case can fit where you want to put it!